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Cheap flights from the United Kingdom to London, Ontario from £303

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/6. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — YXU
12 Jun — 19 Jun1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from United Kingdom to London

Enter your travel dates to find the best prices.

Cheapest flights from United Kingdom to London
Explore the most affordable flight options available from United Kingdom to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 13 May 2026.

Wed 23/906:00
LHR
-
YXU
2 stops16h 43m
Air Canada
Sun 27/915:30
YXU
-
LHR
1 stop12h 05m
Air Canada
Deal found 11/5£572
Tue 22/906:50
LHR
-
YXU
2 stops13h 05m
Air Canada
Sun 27/915:30
YXU
-
LHR
1 stop10h 05m
Air Canada
Deal found 11/5£576
Thu 24/906:00
LHR
-
YXU
2 stops16h 43m
Air Canada
Sun 27/915:30
YXU
-
LHR
2 stops13h 30m
Air Canada
Deal found 11/5£592
Wed 24/606:00
LHR
-
YXU
2 stops16h 32m
Air Canada
Wed 1/715:30
YXU
-
LHR
1 stop10h 05m
Air Canada
Deal found 10/5£600
Thu 25/606:50
LHR
-
YXU
2 stops13h 07m
Air Canada
Thu 2/710:05
YXU
-
LHR
2 stops15h 25m
Air Canada
Deal found 11/5£605
Fri 12/608:40
LHR
-
YXU
2 stops17h 58m
Air Canada
Fri 19/618:10
YXU
-
LHR
1 stop12h 40m
Air Canada
Deal found 13/5£609
Wed 10/606:00
LHR
-
YXU
2 stops32h 18m
Air Canada
Wed 17/610:05
YXU
-
LHR
2 stops17h 30m
Air Canada
Deal found 13/5£610
Thu 17/906:05
MAN
-
YXU
2 stops16h 38m
Air Canada
Thu 24/915:30
YXU
-
MAN
1 stop10h 00m
Air Canada
Deal found 11/5£616
Thu 17/906:05
MAN
-
YXU
2 stops16h 38m
Multiple Airlines
Thu 24/915:30
YXU
-
MAN
2 stops16h 50m
Multiple Airlines
Deal found 11/5£633
Fri 12/617:10
STN
-
YXU
3 stops33h 28m
Multiple Airlines
Fri 19/615:30
YXU
-
STN
3 stops25h 05m
Multiple Airlines
Deal found 13/5£647
Wed 17/609:15
LCY
-
YXU
2 stops34h 42m
Lufthansa
Mon 22/615:30
YXU
-
LCY
2 stops21h 25m
Lufthansa
Deal found 10/5£653
Thu 11/608:30
STN
-
YXU
3 stops34h 20m
Multiple Airlines
Wed 17/606:10
YXU
-
STN
2 stops35h 40m
Multiple Airlines
Deal found 13/5£667

Find flight deals from United Kingdom to London

Keep the following information in mind while searching for United Kingdom to London flight deals. Data was last updated 13 May 2026.

Round-trip from

£572

One-way from

£303
Air Canada
  • Air Canada
  • 23/9-27/9
  • 3 total stops
  • 28h 48m total
  • United Kingdom to London
Search Deals
3/6
  • 3/6
  • 3 total stops
  • 50h 25m total
  • United Kingdom to London
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from United Kingdom to London that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 13 May 2026.
Use the filters below to find and compare flights from the United Kingdom to London that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

ManchesterLondon

MAN - YXU

MANYXU

Manchester

Thu 17/9

06:05-17:43

2 stops16h 38m

London

Thu 24/9

15:30-06:30

1 stop10h 00m

£616

LondonLondon

LHR - YXU

LHRYXU

London Heathrow

Sat 27/6

08:30-17:32

1 stop14h 02m

London

Sat 4/7

18:20-11:50

1 stop12h 30m

£617
Fastest return journey

LondonLondon

LHR - YXU

LHRYXU

London Heathrow

Fri 26/6

12:05-17:32

1 stop10h 27m

London

Fri 3/7

18:20-09:35

1 stop10h 15m

£617

LondonLondon

LHR - YXU

LHRYXU

London Heathrow

Thu 18/6

06:50-14:57

2 stops13h 07m

London

Mon 22/6

15:30-13:00

2 stops16h 30m

£620

LondonLondon

LHR - YXU

LHRYXU

London Heathrow

Sun 7/6

06:00-21:38

2 stops20h 38m

London

Tue 16/6

10:05-11:50

1 stop20h 45m

£628

LondonLondon

LHR - YXU

LHRYXU

London Heathrow

Thu 28/5

08:45-08:53

2 stops29h 08m

London

Mon 1/6

15:30-08:35

1 stop12h 05m

£630

ManchesterLondon

MAN - YXU

MANYXU

Manchester

Thu 17/9

06:05-17:43

2 stops16h 38m

London

Thu 24/9

15:30-13:20

2 stops16h 50m

£633

LondonLondon

LHR - YXU

LHRYXU

London Heathrow

Thu 25/6

06:50-14:57

2 stops13h 07m

London

Sat 4/7

18:20-09:35

1 stop10h 15m

£635

LondonLondon

LHR - YXU

LHRYXU

London Heathrow

Sun 7/6

06:00-17:33

2 stops16h 33m

London

Mon 15/6

18:10-16:40

2 stops17h 30m

£641

LondonLondon

LHR - YXU

LHRYXU

London Heathrow

Wed 10/6

07:25-17:33

2 stops15h 08m

London

Wed 17/6

10:05-08:35

2 stops17h 30m

£647

Flights are sorted by cheapest return flights first.

Deals found on 8/5

Showing 1-10 of 53 resultsSorted by cheapest first
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6

Best time to book a flight from United Kingdom to London

Have a flexible travel schedule? Discover the best time to fly to London from United Kingdom with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from the United Kingdom to London

What is the cheapest month to book a flight from United Kingdom to London, Ontario?

Currently, April is the cheapest month in which you can book a flight from United Kingdom to London, Ontario (average of £424). Flying from United Kingdom to London, Ontario in October is currently the most expensive (average of £582). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Reviews of airlines servicing London

Get insights into the airlines that provide service to London. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to London. Reviews last updated 13 May 2026.
Read reviews from past customers who have flown with Air Canada from the United Kingdom to London. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Air Canada
7.1
Good
11,026 reviews
Check prices

Crew

7.8

Food

6.3

Overall

7.1

Entertainment

6.8

Boarding

7.3

Comfort

7.1

Reviews

1 / 20
8.0
Excellent

John,Apr 2026

YVR - YOW

Crew was very attentive and meals were good. My wife required a wheel chair due to an accident on vacation. The service in Toronto was poor and Ottawa no better. Southeast Asia could teach them lots. Flight originated in Manila on ANA which was cancelled due to a mechanical issue. We were put up overnight in the Savoy Hotel with dinner and breakfast. The airline staff and hotel staff were fantastic.
Air Canada
7.1
Good
11,026 reviews
Air Canada
7.1
Good
11,026 reviews
Check prices

Crew

7.8

Food

6.3

Overall

7.1

Entertainment

6.8

Boarding

7.3

Comfort

7.1

Reviews

1 / 20
8.0
Excellent

John,Apr 2026

YVR - YOW

Crew was very attentive and meals were good. My wife required a wheel chair due to an accident on vacation. The service in Toronto was poor and Ottawa no better. Southeast Asia could teach them lots. Flight originated in Manila on ANA which was cancelled due to a mechanical issue. We were put up overnight in the Savoy Hotel with dinner and breakfast. The airline staff and hotel staff were fantastic.

Related info for your journey

Find useful and relevant information for your journey from United Kingdom to London. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to London from United Kingdom?

    Located just 5.3 mi from the city center, London (YXU) is the airport most travelers will use when flying to London from United Kingdom.

  • How long is the flight from United Kingdom to London, Ontario?

    There are many flights that can get you from United Kingdom to London, Ontario in 16h 38m. Fly via Air Canada, SWISS, or Lufthansa to get the fastest option. Airlines will cover a distance of 3509 mi. Both multi-stop and direct flights can be found to your destination and back.

  • What are the most popular routes from United Kingdom to London, Ontario?

    Most travelers choose London Heathrow - London, London Gatwick - London or London Stansted - London when deciding on the best route from United Kingdom to London, Ontario.

  • Can I find deals for flights from United Kingdom to London that include hotel bookings?

    Yes. In addition to deals on United Kingdom to London flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from United Kingdom to London?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from United Kingdom to London.

  • Can I find deals for business class flights from United Kingdom to London?

    Yes. Cheapflights offers flight deals from United Kingdom to London by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from United Kingdom to London, Ontario?

    Currently, April is the cheapest month in which you can book a flight from United Kingdom to London, Ontario (average of £424). Flying from United Kingdom to London, Ontario in October is currently the most expensive (average of £582). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for United Kingdom to London

See prices for flight routes from nearby airports that may be better suited for you.
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London City to Ottawa flights
Stansted to Ottawa flights
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Edinburgh to Pierre Elliott Trudeau Intl flights
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Dublin to Toronto Island flights
Heathrow to London flights
Southampton to Pearson Intl flights
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Newcastle upon Tyne to Toronto Island flights
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Birmingham to Pierre Elliott Trudeau Intl flights
Heathrow to Windsor flights
Bristol to Pearson Intl flights
Gatwick to London flights
Belfast Intl to Pearson Intl flights
Belfast City to Pearson Intl flights
Heathrow to Thunder Bay flights
Charles de Gaulle to Pierre Elliott Trudeau Intl flights

Top airline flying from United Kingdom to London

Discover the top airline that operate flights from United Kingdom to London. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 13 May 2026.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest£534Average£652FlexibilityNo cancel feeOn-time67%
Search Air Canada flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from United Kingdom to London?

Deals for United Kingdom to London flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets from United Kingdom to London?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from United Kingdom to London for you. Better yet — we are completely free to use.

Can Cheapflights find flights from United Kingdom to London with no change fees?

Yes, we can. To see specific flights from United Kingdom to London with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights from United Kingdom to London become cheaper?

Of course! You can now track prices for flights from United Kingdom to London and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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